Thursday, 18 May 2017

Which standard REST API methods allow you to manage object?


POST :- To create/update objects
GET :- To read objects
DELETE :- To delete objects.
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How to resolve the enhanced zoning lock problem?



Step 1:- show zone status vsan command to determine the lock holder.

 Step 2:- Use the no zone commit vsan command on the switch that holds the lock if you are the holder of the lock.

 Step 3 :- Use the no zone commit vsan <vsan id> force command on the switch that holds the lock to release the lock if another user holds the lock.

 Step 4:- If problems persist, use the clear zone lock command to remove the lock from the switch. This should only be done on the switch that holds the lock.
NOTE :- Cisco document is the source of above information.
 
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What is the Programming language used at the core of OpenStack?

Python is used as programming language in Openstack.
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Can WS-C3850-12XS-S support both 1 gig and 10 gig ?

Yes, Cisco switch WS-C3850-12XS-S can support both 1 Gig an 10 Gig.
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You configured a new appliance port, but the port has a pinning failure. Which option is a possible cause ?

Appliance VLANs are missing duplicate global VLANs.

When a VLAN is created for an appliance port in the Appliances section of LAN tab, make sure to create the same VLAN in the LAN Cloud tab.
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Monday, 15 May 2017

Distribute list in out direction - OSPF





R1:-

interface Loopback0
 ip address 1.1.1.1 255.255.255.255

 interface FastEthernet0/0
Description “Connected to R5”
 ip address 15.15.15.1 255.255.255.0
no shut

interface FastEthernet0/1
Description “Connected to R3”
 ip address 13.13.13.1 255.255.255.0
no shut

interface FastEthernet1/0
Description “Connected to R2”
 ip address 12.12.12.1 255.255.255.0
no shut

router eigrp 1
 network 15.15.15.1 0.0.0.0
 redistribute ospf 1 metric 1 1 1 1 1

router ospf 1
 router-id 1.1.1.1
 log-adjacency-changes
 redistribute eigrp 1 subnets
 network 12.12.12.1 0.0.0.0 area 0
 network 13.13.13.1 0.0.0.0 area 0
 distribute-list Block_5.5.5.5/32 out   \\ Distribute list in out direction can be used to filter external routes. This Distribution list is preventing 5.5.5.5/32

ip access-list standard Block_5.5.5.5/32
 deny   5.5.5.5
 permit any

R2:-

nterface Loopback0
 ip address 2.2.2.2 255.255.255.255

interface Loopback1
 ip address 20.1.1.2 255.255.255.0
 ip ospf network point-to-point

interface Loopback2
 ip address 20.1.2.2 255.255.255.0
 ip ospf network point-to-point

interface FastEthernet1/0
Description “Connected to R1”
 ip address 12.12.12.2 255.255.255.0
no shut

router ospf 1
 router-id 2.2.2.2
 log-adjacency-changes
 network 12.12.12.2 0.0.0.0 area 0
 network 20.1.1.2 0.0.0.0 area 0
 network 20.1.2.2 0.0.0.0 area 0


R3:-

interface Loopback0
 ip address 3.3.3.3 255.255.255.255

interface FastEthernet0/1
Description “Connected to R1”
 ip address 13.13.13.3 255.255.255.0
no shut

interface FastEthernet1/0
Description “Connected to R4”
 ip address 34.34.34.3 255.255.255.0
 no shut

router ospf 1
 router-id 3.3.3.3
 log-adjacency-changes
 network 13.13.13.3 0.0.0.0 area 0
 network 34.34.34.3 0.0.0.0 area 1


R4:-


interface Loopback0
 ip address 4.4.4.4 255.255.255.255

interface FastEthernet0/0
Description “Connected to R6”
 ip address 46.46.46.4 255.255.255.0
no shut

interface FastEthernet1/0
Description “Connected to R3”
 ip address 34.34.34.4 255.255.255.0

router ospf 1
 router-id 4.4.4.4
 log-adjacency-changes
 network 34.34.34.4 0.0.0.0 area 1
 network 46.46.46.4 0.0.0.0 area 1


R5:-

interface Loopback0
 ip address 5.5.5.5 255.255.255.255


interface Loopback1
 ip address 55.55.55.55 255.255.255.255
!
interface FastEthernet0/0
Description “Connected to R1”
 ip address 15.15.15.5 255.255.255.0

router eigrp 1
 network 5.5.5.5 0.0.0.0
network 55.55.55.55 0.0.0.0
 network 15.15.15.5 0.0.0.0


Verification:-


R1:-

R1#sh ip ospf neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface
3.3.3.3           1   FULL/BDR        00:00:37    13.13.13.3      FastEthernet0/1
2.2.2.2           1   FULL/BDR        00:00:31    12.12.12.2      FastEthernet1/0

R1#sh ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(1)
H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq
                                            (sec)         (ms)       Cnt Num
0   15.15.15.5              Fa0/0             10 00:06:10  111   666  0  7
R1#

R1#sh ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      1.0.0.0/32 is subnetted, 1 subnets
C        1.1.1.1 is directly connected, Loopback0
      5.0.0.0/32 is subnetted, 1 subnets
D        5.5.5.5 [90/156160] via 15.15.15.5, 00:06:13, FastEthernet0/0
      6.0.0.0/32 is subnetted, 1 subnets
O IA     6.6.6.6 [110/4] via 13.13.13.3, 20:53:56, FastEthernet0/1
      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        12.12.12.0/24 is directly connected, FastEthernet1/0
L        12.12.12.1/32 is directly connected, FastEthernet1/0
      13.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        13.13.13.0/24 is directly connected, FastEthernet0/1
L        13.13.13.1/32 is directly connected, FastEthernet0/1
      15.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        15.15.15.0/24 is directly connected, FastEthernet0/0
L        15.15.15.1/32 is directly connected, FastEthernet0/0
      20.0.0.0/24 is subnetted, 2 subnets
O        20.1.1.0 [110/2] via 12.12.12.2, 22:24:01, FastEthernet1/0
O        20.1.2.0 [110/2] via 12.12.12.2, 22:22:42, FastEthernet1/0
      34.0.0.0/24 is subnetted, 1 subnets
O IA     34.34.34.0 [110/2] via 13.13.13.3, 21:05:58, FastEthernet0/1
      46.0.0.0/24 is subnetted, 1 subnets
O IA     46.46.46.0 [110/3] via 13.13.13.3, 20:53:56, FastEthernet0/1
R1#

R2:-

R2# sh ip ospf neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface
1.1.1.1           1   FULL/DR         00:00:31    12.12.12.1      FastEthernet1/0

R2#sh ip route  \\ No 5.5.5.5/32 route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      2.0.0.0/32 is subnetted, 1 subnets
C        2.2.2.2 is directly connected, Loopback0
      6.0.0.0/32 is subnetted, 1 subnets
O IA     6.6.6.6 [110/5] via 12.12.12.1, 20:53:25, FastEthernet1/0
      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        12.12.12.0/24 is directly connected, FastEthernet1/0
L        12.12.12.2/32 is directly connected, FastEthernet1/0
      13.0.0.0/24 is subnetted, 1 subnets
O        13.13.13.0 [110/2] via 12.12.12.1, 22:22:12, FastEthernet1/0
      15.0.0.0/24 is subnetted, 1 subnets
O E2     15.15.15.0 [110/20] via 12.12.12.1, 17:02:59, FastEthernet1/0
      20.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C        20.1.1.0/24 is directly connected, Loopback1
L        20.1.1.2/32 is directly connected, Loopback1
C        20.1.2.0/24 is directly connected, Loopback2
L        20.1.2.2/32 is directly connected, Loopback2
      34.0.0.0/24 is subnetted, 1 subnets
O IA     34.34.34.0 [110/3] via 12.12.12.1, 21:05:27, FastEthernet1/0
      46.0.0.0/24 is subnetted, 1 subnets
O IA     46.46.46.0 [110/4] via 12.12.12.1, 20:53:25, FastEthernet1/0
R2#


R3:-

R3#sh ip ospf neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface
1.1.1.1           1   FULL/DR         00:00:38    13.13.13.1      FastEthernet0/1
4.4.4.4           1   FULL/BDR        00:00:39    34.34.34.4      FastEthernet1/0

R3#sh ip route    \\ No 5.5.5.5/32 route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      3.0.0.0/32 is subnetted, 1 subnets
C        3.3.3.3 is directly connected, Loopback0
      6.0.0.0/32 is subnetted, 1 subnets
O        6.6.6.6 [110/3] via 34.34.34.4, 20:55:35, FastEthernet1/0
      12.0.0.0/24 is subnetted, 1 subnets
O        12.12.12.0 [110/2] via 13.13.13.1, 22:47:58, FastEthernet0/1
      13.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        13.13.13.0/24 is directly connected, FastEthernet0/1
L        13.13.13.3/32 is directly connected, FastEthernet0/1
      15.0.0.0/24 is subnetted, 1 subnets
O E2     15.15.15.0 [110/20] via 13.13.13.1, 17:04:58, FastEthernet0/1
      20.0.0.0/24 is subnetted, 2 subnets
O        20.1.1.0 [110/3] via 13.13.13.1, 22:25:39, FastEthernet0/1
O        20.1.2.0 [110/3] via 13.13.13.1, 22:24:20, FastEthernet0/1
      34.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        34.34.34.0/24 is directly connected, FastEthernet1/0
L        34.34.34.3/32 is directly connected, FastEthernet1/0
      46.0.0.0/24 is subnetted, 1 subnets
O        46.46.46.0 [110/2] via 34.34.34.4, 20:55:35, FastEthernet1/0

R4:-

R4#sh ip ospf neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface
3.3.3.3           1   FULL/DR         00:00:32    34.34.34.3      FastEthernet1/0
6.6.6.6           1   FULL/DR         00:00:35    46.46.46.6      FastEthernet0/0
R4#sh ip rou
R4#sh ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      4.0.0.0/32 is subnetted, 1 subnets
C        4.4.4.4 is directly connected, Loopback0
      6.0.0.0/32 is subnetted, 1 subnets
O        6.6.6.6 [110/2] via 46.46.46.6, 00:07:07, FastEthernet0/0
      12.0.0.0/24 is subnetted, 1 subnets
O IA     12.12.12.0 [110/3] via 34.34.34.3, 00:07:07, FastEthernet1/0
      13.0.0.0/24 is subnetted, 1 subnets
O IA     13.13.13.0 [110/2] via 34.34.34.3, 00:07:07, FastEthernet1/0
      15.0.0.0/24 is subnetted, 1 subnets
O E2     15.15.15.0 [110/20] via 34.34.34.3, 00:07:07, FastEthernet1/0
      20.0.0.0/24 is subnetted, 2 subnets
O IA     20.1.1.0 [110/4] via 34.34.34.3, 00:07:07, FastEthernet1/0
O IA     20.1.2.0 [110/4] via 34.34.34.3, 00:07:07, FastEthernet1/0
      34.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        34.34.34.0/24 is directly connected, FastEthernet1/0
L        34.34.34.4/32 is directly connected, FastEthernet1/0
      46.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        46.46.46.0/24 is directly connected, FastEthernet0/0
L        46.46.46.4/32 is directly connected, FastEthernet0/0
R4#

R5:-

R5#sh ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(1)
H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq
                                            (sec)         (ms)       Cnt Num
0   15.15.15.1              Fa0/0             12 00:12:16  481  2886  0  7
R5#sh ip rou
R5#sh ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      5.0.0.0/32 is subnetted, 1 subnets
C        5.5.5.5 is directly connected, Loopback0
      6.0.0.0/32 is subnetted, 1 subnets
D EX     6.6.6.6 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
      12.0.0.0/24 is subnetted, 1 subnets
D EX     12.12.12.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
      13.0.0.0/24 is subnetted, 1 subnets
D EX     13.13.13.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
      15.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        15.15.15.0/24 is directly connected, FastEthernet0/0
L        15.15.15.5/32 is directly connected, FastEthernet0/0
      20.0.0.0/24 is subnetted, 2 subnets
D EX     20.1.1.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
D EX     20.1.2.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
      34.0.0.0/24 is subnetted, 1 subnets
D EX     34.34.34.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/0
      46.0.0.0/24 is subnetted, 1 subnets

D EX     46.46.46.0 [170/2560002816] via 15.15.15.1, 00:12:17, FastEthernet0/]
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Saturday, 13 May 2017

BGP - Path Selection Criteria


Below is the BGP path selection criteria.
1.       Highest Weight
2.       Highest local preference
3.       Locally generated routes
4.       Shortest AS Path
5.      Origin Code
6.    Lowest MED
7.       eBGP over iBGP
8.       Lowest IGP metric to the BGP next hop.
9.       Oldest Route in case of ebgp
10.   BGP router with the lowest router ID.
11.   Minimum cluster id
12.   Lowest neighbor address.
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